SEVERE WEATHER BULLETINISSUED BY ENVIRONMENT CANADAAT 8:20 PM EDT SATURDAY 14 SEPTEMBER 2002. ---------------------------------------------------------------------WATCHES/WARNINGS IN EFFECT FOR SOUTHERN ONTARIO...SEVERE THUNDERSTORM WATCH FOR:=NEW= ELGIN=NEW= SARNIA-LAMBTON=NEW= LONDON-MIDDLESEX-OXFORD=NEW= BRANT-HALDIMAND-NORFOLK=NEW= NIAGARA=NEW= HAMILTON=NEW= SOUTHERN HALTON-PEEL. THUNDERSTORMS HAVE DEVELOPED OVER SOUTHWESTERN ONTARIO THIS EVENING. THIS IS AN ALERT TO THE POTENTIAL DEVELOPMENT OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS. MONITOR WEATHER CONDITIONS..LISTEN FOR UPDATED STATEMENTS. IF THREATENING WEATHER APPROACHES TAKE IMMEDIATE SAFETY PRECAUTIONS. ---------------------------------------------------------------------==DISCUSSION==SCATTERED THUNDERSTORMS HAVE DEVELOPED IN A HUMID AND UNSTABLEAIRMASS. SOME OF THESE THUNDERSTORMS CAN HAVE GUSTS UP TO 100 KM/HAND GIVE TORRENTIAL DOWNPOURS FOR THE NEXT 3 HOURS.PLEASE REFER TO THE LATEST PUBLIC FORECASTS FOR FURTHER DETAILS.END/LEE